Sea surface temperature variability in the subpolar Atlantic over the last two millennia
A decadal resolution time series of sea surface temperature (SST) spanning the last two millennia is reconstructed by combining a proxy record from a new sediment sequence with previously published data from core MD99-2275, north of Iceland. The alkenone based SST reconstruction is validated with hi...
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ftird:oai:ird.fr:fdi:010054293 2023-05-15T16:49:51+02:00 Sea surface temperature variability in the subpolar Atlantic over the last two millennia Sicre, M. A. Hall, I. R. Mignot, Juliette Khodri, Myriam Ezat, U. Truong, M. X. Eiriksson, J. Knudsen, K. L. 2011 http://www.documentation.ird.fr/hor/fdi:010054293 EN eng http://www.documentation.ird.fr/hor/fdi:010054293 oai:ird.fr:fdi:010054293 Sicre M. A., Hall I. R., Mignot Juliette, Khodri Myriam, Ezat U., Truong M. X., Eiriksson J., Knudsen K. L. Sea surface temperature variability in the subpolar Atlantic over the last two millennia. Paleoceanography, 2011, 26, PA4218 text 2011 ftird 2021-04-27T22:52:11Z A decadal resolution time series of sea surface temperature (SST) spanning the last two millennia is reconstructed by combining a proxy record from a new sediment sequence with previously published data from core MD99-2275, north of Iceland. The alkenone based SST reconstruction is validated with historic observational data and compared to a new similar temporal resolution reconstruction obtained from sediment core RAPiD21-3K, in the subpolar North Atlantic. The two SST paleorecords show consistent multidecadal scale coolings throughout the interval and similar expressions during the contrasted climatic periods 'colloquially known' as the Medieval Climatic Anomaly (MCA) and Little Ice Age (LIA). In order to further understand the temporal and spatial SST variations and investigate the influence of natural forcings on the observed SST changes during the last millennium, we compare our time series to simulations using the Institut Pierre-Simon Laplace IPSLCM4-v2 climate model. This comparison highlights the potential importance of volcanism as a natural forcing driving coherent abrupt cooling events captured in the subpolar North Atlantic records. Text Iceland North Atlantic IRD (Institute de recherche pour le développement): Horizon Laplace ENVELOPE(141.467,141.467,-66.782,-66.782) |
institution |
Open Polar |
collection |
IRD (Institute de recherche pour le développement): Horizon |
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ftird |
language |
English |
description |
A decadal resolution time series of sea surface temperature (SST) spanning the last two millennia is reconstructed by combining a proxy record from a new sediment sequence with previously published data from core MD99-2275, north of Iceland. The alkenone based SST reconstruction is validated with historic observational data and compared to a new similar temporal resolution reconstruction obtained from sediment core RAPiD21-3K, in the subpolar North Atlantic. The two SST paleorecords show consistent multidecadal scale coolings throughout the interval and similar expressions during the contrasted climatic periods 'colloquially known' as the Medieval Climatic Anomaly (MCA) and Little Ice Age (LIA). In order to further understand the temporal and spatial SST variations and investigate the influence of natural forcings on the observed SST changes during the last millennium, we compare our time series to simulations using the Institut Pierre-Simon Laplace IPSLCM4-v2 climate model. This comparison highlights the potential importance of volcanism as a natural forcing driving coherent abrupt cooling events captured in the subpolar North Atlantic records. |
format |
Text |
author |
Sicre, M. A. Hall, I. R. Mignot, Juliette Khodri, Myriam Ezat, U. Truong, M. X. Eiriksson, J. Knudsen, K. L. |
spellingShingle |
Sicre, M. A. Hall, I. R. Mignot, Juliette Khodri, Myriam Ezat, U. Truong, M. X. Eiriksson, J. Knudsen, K. L. Sea surface temperature variability in the subpolar Atlantic over the last two millennia |
author_facet |
Sicre, M. A. Hall, I. R. Mignot, Juliette Khodri, Myriam Ezat, U. Truong, M. X. Eiriksson, J. Knudsen, K. L. |
author_sort |
Sicre, M. A. |
title |
Sea surface temperature variability in the subpolar Atlantic over the last two millennia |
title_short |
Sea surface temperature variability in the subpolar Atlantic over the last two millennia |
title_full |
Sea surface temperature variability in the subpolar Atlantic over the last two millennia |
title_fullStr |
Sea surface temperature variability in the subpolar Atlantic over the last two millennia |
title_full_unstemmed |
Sea surface temperature variability in the subpolar Atlantic over the last two millennia |
title_sort |
sea surface temperature variability in the subpolar atlantic over the last two millennia |
publishDate |
2011 |
url |
http://www.documentation.ird.fr/hor/fdi:010054293 |
long_lat |
ENVELOPE(141.467,141.467,-66.782,-66.782) |
geographic |
Laplace |
geographic_facet |
Laplace |
genre |
Iceland North Atlantic |
genre_facet |
Iceland North Atlantic |
op_relation |
http://www.documentation.ird.fr/hor/fdi:010054293 oai:ird.fr:fdi:010054293 Sicre M. A., Hall I. R., Mignot Juliette, Khodri Myriam, Ezat U., Truong M. X., Eiriksson J., Knudsen K. L. Sea surface temperature variability in the subpolar Atlantic over the last two millennia. Paleoceanography, 2011, 26, PA4218 |
_version_ |
1766040030389731328 |